, 1887-06-30
Alaska Mines.

Cor Seattle E5D.ss.I
Douglass Island Is separated from
the mann land by q deep-sea channel
about one mile wide The quartz
IeI-as are On the side of the island
facing this channel. and extending
from near the beach t1GO to feet 500
back 5000 10 COCO feet. The first
discovery. known as the "Ireadwell
property" and now as the Paris,
lies nearest the beach, and is claimed
and prospected for about SIX miles,
all showing similar character, though
In some places it IS covered with so
much wash that it will not be worked,
or its value known, for long time.
About thirteen claims of 6OOXl. 800
feet on this ledge lie favorable for
working. and are known to be good.
Of these, seven claims are owned and
worked by companies, three claims
are held at $1,0O0,000 each and the
other three claims are bonded.
This quartz ledge, wherever opened
up, shows from 400 to 500 feet be-
tween walls (the country rock is slate).
All the quartz in the ledge Is
worked by the Treadwell company
ALASKA Mining & Milling Coz at
profit. This Is the only company who
have their mill in @ cleration. They
have 120 stamp mill running night
and day, which has been in opera
ton little over one year, milling
about 300 tons per day. Other prop
critics have development work well
under way, and one certainly, and
probably two properties, have mills
contracted for, and expect to have
them in operation this season.
The Treadwell people make nothing
public, but from careful and reported
misunderstanding men employed,
first interest on capital and probable
shipments of bulliOn-it is certainly
within bounds to say they are making
a clear profit of Sc per ton and work
all the quartz without asserting, Civ
ing them a profit of $50, 600 per month.
Their expenses and interest on capital
runs about $4,000 per month, Some
estimate lower and others higher, but
this is beliesed to be correct 1t is
believed that their gross output is
over 100000 per month, and many
confidently believe it to be Sl25, 900.
One thing appears evident, they are
making a satisfactory profit, as they
have been buying more ground, and
are now enlarging their works to
double their present capacity, which
will give them 24O stamps and a
capacity of 600 tons per day. All the
ore on the island is of a similar charr
aCter and runs from trace to S25 PEI
ton, with streaks of higher grade.
The ore carries gold only of which
about IS per cent. Is saved on ANAL
gamating plates, and the balance Is
concentrated, putting about 30 tons
into one, and saving about 81 per
cent. of all the gold.
The concentrates are entirely iron,
pyrites, or sulphurets. The quartz
ledge back of the above named ledge
/: wider, but cut off by the mountains
and faults in the ground, so they are
not known TO extend beyond few
claims. On the southeast end of this
ledge it is known 10 lie over 600 feet
wide, and to all appearances of ex-
actly the same quartz as the Tread
we'll. Much of the quaatz back of
the Treadwell ledge cannot be worked
probably at present on account of
intervening high ground, which
would make it too far from the tide
water and also too far from the best
locations for mills. The southeast
end is exempt from this objection and
is very favorably situated for mining
or working.